Transmission gearing



P. H. BAILLY.

TRANSMISSION GEARING. APPLICATION FILED JULY 10.1919.

W51 666619 .Z'7Z06/z Z02"- wri g Patented Mar-21,1922.

UNITED STATES fA'l'i-Llil'l fil l 'lfili.

PHILIPPE RENEE BIHLLY, OF PARIS, FRANCE].

TEANSMZESION GEARIHG.

r tionals.

Application filed July 10,

'1 0 all whom it may concern lie it known that l, Pi-iinirrn firearm BAILLY, a citizen of he French llepublic, rcsiding; in Paris, France, have invented certain new and useful Im n'ovements in Trans mission Gearing, of which the following is a specification.

The invention relates to mechanisms to be inserted between a driving shaft and a driven shaft for the purpose of modifying the relative speed of rotation of the said shafts when the driving shaft changes the direction of its rotation or becomes the driven shaft; and it relates more particularly, though not exclusively, to gearing adapted to be inserted between the cranlt shaft of an explosion engine and an electric machine apable of being used. as a lighting dynamo as well as a starting: motor.

The primary object of the invention is to provide a mechanism which shall be simple in construction and reliable in operation.

Other objects of the invention consisting of novel constructions and arrangements of parts will become apparent as the descrip tion proceeds.

The accompanying drawing illustrates the preferred form of my invention but it will be understood that the invention may be embodied in other forms than that herein shown and described without departing from the spirit and scope of the-invention as set forth in the claims.

The single figure of the drawing shows in longitudinal section and somewhat diagrammatically a mechanism constructed in accordance ith my invention.

In this description it is assumed that it is desired to start an internal combustion engine by means of a motor which may be subsequently driven by the engine and act as an electric generator.

In utilizing the electric machine as a genorator it is desirable to rotate the same at a speed proximating that of the explosive on Specification of Letters Patent.

Patented llziar. 2i, 1919. Serial NO. 309,812.

shaft of the electric machine by a speed re ducing gear.

To that end, and according to the iir'c" tion, the shaft (4 of the electric machine is ranged in line with the shaft 7) of the eigplosion engine.

To one end of the shaft (4 is keyed a disc (1 to which is secured, at a certain '{jlISLlllCU from thcshaft a and parallel to the latter, a spindle 03 on which the toothed pinion c is loosely mounted.

To the shaft 6 is keyed a toothed wheel in such a manner that it nieshes with the pinion c. (in the saidshaft o is also mounted, but loosely, a toothed wheel 5 of the same diameter as the wheel f and having nearly the same number of teeth as thesaid wheel and the said wheel 5 is ar'anged so that it also'meshes with the pinion c.

it will be understood that under these conditions, if by any means the pinion c is prevented from rotating; about its spindle there will be obtained a direct drivebetween the shaft o and the shaft Z); but if by any desired means, the wheel 9 is prevented from turning, the shaft a, in rotating, will force the pinion c to roll on the fiz-red wheel 5 but as the said pinion simultaneously engages with the wheel 7 which has a different number of teeth, it will force the wheel 7'', and consequently the engine shaft .7), to rotate to a small extent (which extent will be, l/nth revolution per rcvolutiim of the shaft c-if the number of teeth of the wheel 9 were it and that of the wheel f, (nl).

The pinion 6 may be locked on the spindle (l, by mounting; itso that it is capable of sliding longitudinally on the said spindle and by providing it with clutch teeth or claws a capable of engaging with corresponding teeth csecured' to the disc 0. And in the same way, the wheel 9 may be locked from rotation by mounting it on the shaft Z) so that it may slide longitudinally on the said shaft, and by providing it with claws 9 capable of engaging with claws it secured to the stationary frame it of the apparatus.

In order to obtain automatically such a longitudinal movement of the pinion o and of the wheel 9, the pinion e and the wheel f ar provided with teeth inclined in such a manner as to tend to force the pinion e laterally when the shafta is the driving shaft, and during this lateral motion of the pinion e, to the right as shown in the figure, the flanges e secured to the said pinion and embracing the gear wheel g, impart corre sponding lateral motion to the gear 9 until the clutch teeth 5 of the latter the clutch teeth h. On the other hand, when the shaft 7) is the driving shaft, the teeth 6 will be forced into engagement with the eorresponding clutch teeth. 0 by the lateral motion of the pinion e in. the oppositedirection, that is to the left shown in the ore, and during this lateral motion, the flanges will move the gear wheel. 9 laterally so as to lisengage theclutch teeth 9 7/.

111 this way, when the shaft 4 is the driving shaft, the pinion e is pushed in the di rection of the arrow 6, and tie wheel 9 is locked owing to its claws g engaging with the claws it; and when the shaft [9 is the driving shaft, the pinion c is pushed in the opposite direction, and is looked on its spindle (Z owing to its claws e engaging with the claws o of the disc 0. I I i It will be understood that the parts of the pinion o meshingwith gears and may to secureby Letters Patent is 113d! :1 different number of teeth and be of a different diameters, the diameters and number of teeth in the gear wheels 7" and 9 may also be varied, and other modifications may be made without departing from the spirit and scope of the inx ention as expresse in the appended claims.

hat lolaim as my invention and desire 1. In transmission mechanism, the combination of a shaft having a disk rigidly secured-thereto,a second shaft in axial alignment with said shaft having a gear wheel fixed thereto and a gear wheel loosely mounted'thereon, said gear wheels having an un-.

equal number of teeth, a spindle carried by said disk, a pinion loosely. mounted on saiC spindle and meshing with both of said gear wheels, means for holding said loosely mounted. gear stationary when the shaft having the disk is the driverand means for operatively engaging said pinion and disk when the second shaft is the driver.

'2. In transmission mechanism, the comhination of a shafthaving a disk rigidly secured thereto, a second shaft in axial alignmentwith said shaft having a gear wheel two subscribing witnesses.

her, and means for preventing relative.

lateral displacement of said pinion and loosely mounted. gear, whereby when said first named shaft is the driver the clutch be tween the loosely mounted gear and stationary member will function to hold said gear stationary and. when'said. second shaft is the ilriver said pinion will be automatically moved laterally until the clutch between the pinion and disk is in operative engagement.

In transmission mechanism, the combination of a shaft having a spindle in spared relation and rigidly connected thereto, a second shaft, and means for drivingthe second. shaft from the first at reduced speed or thefirst shaft from the second at a speed GPPYOXlHlltlDg the speed of rotation of said second shaft,said means including a pinion slidably mounted on said spindle adapted to rotate thereon when the first shaft-is the driver and to revolve with said disk when. the second shaft is the driver;

4. In starting and lightmg mechanism for internal combustion engines, gearing adaptto be placed between the starter and enthereto and a gear wheel loosely said spindle and meshing with both of gineshaits including a gear Wheel fixed to r and a gear wheel loosely mounted upon the engine shaft, said gear wheels having an unequal numher of teeth, and a pinion meshing with both of said gearwheels, and means for locking said loosely -mounted gear wheel from rotation in starting theiengine.

In testimony. whereof I have s1gnedm'y name tothis spec1fication 1n the presence of PHILIPPE HENRI BAILLY. 

